Response from John Reeve of Intervals
Thank you for the feedback. We appreciate it. Regarding the UI we agree it's dated. We've been making minor updates to the interface since we launched 11 years ago, but times have changed. Our next major release will unveil an entirely new and modernized interface. We're hoping to beta launch our new look soon. If you would like to be part of the beta tester group please email email@example.com to be added to the list.
Meanwhile, check out our blog at www.myintervals.com/blog for a sneak preview.
Once we get the new look finalized, our plan is to address other areas like the document uploads, mobile apps, and third-party integrations. Thanks again for your input.